CRAN is currently archived by Software Heritage:
The Comprehensive R Archive Network is the package management system of the R language.
CRAN does not expose a language-agnostic API with the information we need, so for
simplicity/efficiency, Software Heritage’s CRAN lister loads the weekly dump of the CRAN database
(in RDS format) and parses it with
Then for each package, it creates an origin with
https://cran.r-project.org/package=package_name as URL.
R packages have intrinsic metadata, mostly the
DESCRIPTION file in their root
directory, in the deb822
Software Heritage’s R loader parses it to extract authorship information, but this file is otherwise
not parsed yet.